Almost 400 million cups of coffee are consumed to people daily. Caffeine is a stimulant that many people drink to increase alertness. Caffeine increases the functioning of many of your systems, including the central nervous system, suggesting that caffeine increases alertness. However, recent evidence suggests caffeine does not increase alertness, due to a tolerance buildup to caffeine’s effects.
According to the study, moderate caffeine consumption has been connected with an increase in alertness. This study was aimed at linking caffeine with dependence, but also found that those who consume caffeine are more alert. The mechanism is simple. Caffeine is a stimulant that acts on many systems of the body, including the nervous system. By stimulating the action of the nervous system, caffeine is thought to increase your alertness.
Researchers involved in the study published in “Neuropsychopharmacology” in June 2010 state that those who drink coffee regularly may have a developed tolerance to its effects. The alertness regular coffee drinkers feel after having their regular amount simply brings them back to their “normal” state. In addition, researchers state that caffeine can increase your anxiety levels, which may be part of the effect that caffeine has on your cognitive state.
Caffeine affects many parts of your body, including your cardiovascular, digestive and urinary systems. If caffeine is not really making you more alert, you may want to consider cutting back to prevent any negative health effects. However, the low to moderate consumption of caffeine should be safe. Taking in 200 mg of caffeine per day, about two cups of coffee, should be okay if you just can’t live without it.
